Ostriches don’t use their wings for flight, but they do use them for other functions, such as mating rituals and balance. Many ancestors of ostriches did fly. What can you conclude about ostrich behavior from this information? A. Ostriches inherited the genes for wings from their ancestors, even though the function of these structures changed. B. Ostriches developed mutations in their wings to willfully adapt to their current environment. C. Ostriches lack a close evolutionary relationship with these ancestral birds. D. In the near future, ostriches will have no wings because they have no need for them. Reset Next

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .